<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>v-model指令</title>
</head>

<body>
    <div id="app">
        <button @click="setM">修改message</button>
        <input type="text" v-model="message" @keyup.enter="getM">
        <h2>{{ message }}</h2>
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>

    <script>
        var app = new Vue({
            el: "#app",
            data: {
                message: "黑马程序员"
            },
            methods: {
                getM: function() {
                    alert(this.message)
                },
                setM: function() {
                    this.message = "醋丁🐟"
                }
            }
        })

        // v-model指令的作用是便捷的设置和获取表单元素的值
        // 绑定的数据和表单元素值相关联
        // 绑定的数据和元素的值是双向绑定的
    </script>
</body>

</html>